Rotary reciprocating valve for internal-combustion engines



A. w. KATH 1,766,127

ROTARY RECIPROCAT ING VALYE FOR INTERNAL COMBUSTIbN ENGINES June 24, 1930.

Filed Sept. 13, 1926 Patented June 24, 1930 i Anniuin w. KATH; or" DET EOI Q C A I I norAnY, morrnoon'rme' vnnvnron rnrnnnnn-oolvrnusrron nnemns [A lication filed September 13,1926. s -iialne. 135,227.

Theinvention relatestd valves for nal combustion engines of the cylindrical sleeve type andtheinvention consists, first the novel construction of the valve and its opcrating; mechanism 1 and, second. 1n ,Lthe arrangement of said valve relation to theenginei cylinders as hereinafter set forth;

In the drawings} r r c F'gu re 1 is a cross section through an. in-

ternal combustion engine providedwith my improvedvalvegi V Figure2 1s a horizontal section on line oft-Figural. I H a l 1 I,

is the engine block which may be either J5 for a sin'gleor multi-cylinderconstruction and which is proyided with the usual water jacket B; C is a cylindrical valve casing preferably integral with the block, and arranged atone side of and with its axis parallel to the, axis of the power cylinder D is a removablehead of the block which also is I water jacketed and is formed with apassage E therein for connecting the upperends of the engine and valve cylinders. Fis a hole low core member inserted in the cylinder 0 but of a smaller diameter so as to leave therebetween an. annular space for a cylindrical valve'slee ve G. The core F'has at its upper end a shouldered flange portion H for fitting 40 the head D and projected downward inthe hollow core F being eccentrically arranged in" relation thereto so asto provide greater clear-' 'anc'e on' the one side thereof.

The sleeve valve reciprocate within the annular-recess between the hollow core]? and the cylinder 0. This valve is actuated by mechanism comprising a pitman rod L secured at its upper than on the opposite side end to the valve and at its lower end to a ro- Gris adapted to rotate and tary crank Mfrevolvable about the -axis of the cylin'der G but in a-plane oblique to said axis. Theconnection between the pitman and the crank M is a universal pivotal joint N which permits the ohange'in angularity A F during rotation of the crank. The'crank M is mountedupon an obliquely inclined shaft O whichfis journaled in bearings P on the engine plane, said shaft being connected by the spiral gears Q, and R; with a shaft S, which is'parallel to ,the'crankshaft The shaft S is'drivenby suitable connection with the crank shaft T and thera'tio of the'gearing is suclrlthat the'crank M will, complete one revolutlon in each'twoirevolutionsof the crank shaft j "Wan the construct-ion as described, when:

the engineisrunning, thecrank M and pitman L' will impart to the sleeve G a combined rotationallfand' v.longitudinal reciprocating movement. The sleeve is provided w thal sing1eportflG,-which is alternately-carried V into registration with the inlet ports I and the'exhaust'portJ. Thus any heat communi- ,cated .withthe valve by the exhaust gases is;

dissipated when the cool gases enter through.

the inlet' ports. jThis is also. true of the hollowore member F and member K which are alternatelyi exposed to the hot gases of ex; f plosion and: the cool. vgases from thefintake.

Ino'pe'ration the gases discharged from the intake is drawn into" the engine cylinder duringthe suction stroke ofthe engine piston U'and during the compression stroke is expelled. from; the cylinder through the port E into pthe hollow core; Fij The member K is ofsuch form as to leave inthe surrounding j total clearance for 'obtaining the'desired com;- pression. 'During compression the heat which has been stored in the member K from a previous. explosion is transferred toithe f compressed charge and insures the'vaporiza= tion of thejliquid fuel inthe charge. On the other hand, after the explosion the heat which is communicated to the member Kis partly dissipated by. its connection .to the water jacketin the head 10 nd tofacilitate" such dissipation' thememberK is preferably I spacetogethenwith theportE and clearancefi in the ,engine'j cylindertjust the required 2 "formed of a good heat conducting material suchas copper.

I V .The'rotational movement will effect a regis- ,tration of the port Gt with the inlet and exhaust ports in properly, timed relation while the reciprocating movement will insurepropthevalve and cylinder. 7 As the inlet-and'o'utlet portsIqandJ; are, onopposite sides of the cylinderGthe'pressure on the valve due to compression orex'plosion' aseouspressure will be substantially balanced.v Thus the valve in operation will be'freeboth from pressure.

heat distortion and from any unbalanced- What. I claimas'my invention is: I 1. In an internal] cornbust1on eng1ne, the

. combination withva' cylindrical valve chant lng said crank and sa d valve sleeve to 1m her and a sleeve valvev revoluble therein, of a crank revoluble' about-anlaxis obl que to the axls-of sa dgvalve and a rod for connect- 7 part to the latter a combined rotary and re-' "inder-and' valvel cyhnders prov ded with a c ciprocating movement.

, 2.111 an. internal combustion engine, the

combination with gagpower cylinderand avalve cylinder arranged parallel to each other,

e of a hollow core arranged concentrically within said valve, cylinder leaving e an annular spacetherebetween and having an open upper end, a head for iclosing 'both the power y1-,

' passage establishing communication between the adjacent ends ofsaid power cylinder-and.

saidifhollow core, said'val ve cylinderand'hole low core-being provided with registering v ports on, opposite sides thereof respectivelyf constitutingithe inletjand-I exhaust ports-,' a

rotaryusleeve valve in the annular; space hetweensaid, core, andivalvec-ylinder provided I with single port which is. alternately. reg-. ister'ed with said inletQand exhaust, port's.v

In an internal combustion engine, the I COIIIbIDZLtIOII with a powencyllnder and) a valve cylinder formed in a single block hav "ports, a sleevevalve engaging the annular" space between said valve. cylinder-and ,hol

' ing parallel a es ,-of a hollowi core arranged concentrically within said valve cylinder'to' form an annular space between thewalls to said sleeve a rotary and longitudinal reciprocating movement.

valve cylinder arranged parallel to eachother,

ofa hollow core concentrically arranged with in said valve cylinder to form an annular space e e lz he wallsrh r q isaid Core r r and cylinder beingprovided with registering 'er'distribution of the lubrican t on the wall" -por-ts'on opposite sides thereof respectively ;of the cylinder'C and also'uniform wear on constituting-inlet exhaust ports; a head for closing both said power and valve cylg inder .pm dedawithaipassage eei ing the upper ends thereof, a valve sleeve in the a numr: space 1 between said hollow core and valve cylinder being provided with a single, port which is alternately registered with sa'id inlet and exhaust ports and means for imparting to= sa d sleeve valve-a rotary and longitudinal reciprocating movement.

v5. Inan internal combustion-engine, the v combinationwith power cylinder; of ac'y lindrical valve chamber communicating with I nately register with said inlet and exhaust! ports, anda common means for efiectingro;

tary and reciprocatory motionto said valve;

r In testi ony whereofjlaifix si nature.

; anneal) w.

7 thereof and being openat its outer endand... having a shouldered seat on said'cylinderya head for closing both the power and valve cylinders providedwith'a passage for con 'necting'the ends of the same, said valve cylinder and hollow core beingprovidedwith registeri-ng ports on'opposite sides thereof respectively constituting inlet and" exhaust) qw l ore and? being provided with ab i 'g e port for alternate registration withsaid inlet:

and exhaustports andmeans for im artin 

